0.45-[10-(0.2+6.37除以0.7)]*0.5=?
问题描述:
0.45-[10-(0.2+6.37除以0.7)]*0.5=?
一定要是简便计算哟,快一点,帮帮忙拉,感激不尽.
答
0.45-[10-(0.2+6.37除以0.7)]*0.5
=0.45-[10-(0.2+9.7)]*0.5
=0.45-0.1*0.5
=0.4